a couple of weeks ago at work we were talking about holograms when we found a link with instructions to construct a hologram pyramid for the iphone. we ended up spending well over an hour hacking apart a cd jewel case and taping it back together with strips of duct tape. the result was surprisingly cool, albeit in a very fragile, homemadey kinda way and it inspired me to part with £5 and buy a pre-made pyramid from ebay. this is that with my phone balanced face down projecting an image of a salvador dali sculpture i photographed three years ago. it's actually projecting 4 images, which are then split and projected onto each side of the pyramid. the effect certainly works better when you have moving 3 dimensional images projected from the phone, but as you're viewing this is a 2 dimensional photo i figure it's the same difference from here.